ATE238449T1 - METHOD FOR ADJUSTING A EVEN PROPERTIES TRANSVERSAL PROFILE OF A PAPER WEB - Google Patents

METHOD FOR ADJUSTING A EVEN PROPERTIES TRANSVERSAL PROFILE OF A PAPER WEB

Info

Publication number
ATE238449T1
ATE238449T1 AT99108743T AT99108743T ATE238449T1 AT E238449 T1 ATE238449 T1 AT E238449T1 AT 99108743 T AT99108743 T AT 99108743T AT 99108743 T AT99108743 T AT 99108743T AT E238449 T1 ATE238449 T1 AT E238449T1
Authority
AT
Austria
Prior art keywords
pulp
profile
throughput
setting
paper web
Prior art date
Application number
AT99108743T
Other languages
German (de)
Inventor
Ulrich Begemann
Original Assignee
Voith Paper Patent Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Paper Patent Gmbh filed Critical Voith Paper Patent Gmbh
Application granted granted Critical
Publication of ATE238449T1 publication Critical patent/ATE238449T1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/08—Regulating consistency
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/06—Regulating pulp flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/09—Uses for paper making sludge
    • Y10S162/10—Computer control of paper making variables
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/09—Uses for paper making sludge
    • Y10S162/10—Computer control of paper making variables
    • Y10S162/11—Wet end paper making variables

Landscapes

  • Paper (AREA)

Abstract

To set a consistent characteristic lateral profile in a paper web, the weight cross section profile is measured and adjusted by setting the sectional pulp density at the stock inlet. The lateral formation profile is then set by amending the specific pulp throughput at the delivery jet of the stock inlet. Simultaneously or subsequently, the dimensions of the delivery jet are increased or decreased at points where there is a raised pulp throughput. The change in the delivery jet is proportional to the change in the specific pulp throughput and, after setting, the flow is at the required lateral speed profile. At least one of the setting steps is effected by a control circuit. Additional chemicals are added pref. at the edge zone, to delay and/or increase the water extraction rate from the pulp. The variations in the specific pulp suspension flows are through sectional extraction or addition of a fluid in the Z-direction, together with filling materials where there are zones with a higher throughput. The technique is especially for a paper making machine with a double fourdrinier.
AT99108743T 1998-08-05 1999-05-03 METHOD FOR ADJUSTING A EVEN PROPERTIES TRANSVERSAL PROFILE OF A PAPER WEB ATE238449T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19835295A DE19835295A1 (en) 1998-08-05 1998-08-05 Method for setting a uniform property profile of a paper web

Publications (1)

Publication Number Publication Date
ATE238449T1 true ATE238449T1 (en) 2003-05-15

Family

ID=7876491

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99108743T ATE238449T1 (en) 1998-08-05 1999-05-03 METHOD FOR ADJUSTING A EVEN PROPERTIES TRANSVERSAL PROFILE OF A PAPER WEB

Country Status (4)

Country Link
US (1) US6203665B1 (en)
EP (1) EP0978587B1 (en)
AT (1) ATE238449T1 (en)
DE (2) DE19835295A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10056138A1 (en) * 2000-11-13 2002-05-23 Voith Paper Patent Gmbh Press section for the extraction of water from a wet web, or paper or tissue or cardboard, sets the dry content at a raised level at the edges in and/or before the press section to increase the web stability
DE10118508A1 (en) 2001-04-12 2002-10-17 Voith Paper Patent Gmbh Process and plant for producing a fibrous web
FI20012175A7 (en) * 2001-11-09 2003-05-10 Metso Paper Automation Oy Method and apparatus for controlling the operation of a wire section
DE102011078925A1 (en) 2011-07-11 2013-01-17 Voith Patent Gmbh Method for setting uniform property transverse profile of e.g. paper in headbox of fibrous web manufacturing machine, involves integrating basis weight cross profile and fiber orientation cross profile in respective control circuits
US20150292158A1 (en) * 2012-09-28 2015-10-15 Voith Patent Gmbh Method for controlling the formation of a fiber web of a fiber or paper producing process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3514554C3 (en) * 1984-09-19 1998-01-08 Escher Wyss Gmbh Headbox device for a paper machine and method for its operation
DE4239845C2 (en) * 1992-11-05 1998-12-03 Voith Gmbh J M Procedure for measuring the effect of adjustments on the headbox and for correcting the basis weight and fiber orientation cross profile
US5560807A (en) * 1995-03-29 1996-10-01 Beloit Technologies, Inc. Headbox additive injection system
US5944957A (en) * 1997-03-14 1999-08-31 Valmet Corporation Regulations system in a paper machine for controlling variation of the basis weight of the paper in the machine direction

Also Published As

Publication number Publication date
DE59905149D1 (en) 2003-05-28
DE19835295A1 (en) 2000-02-10
EP0978587A3 (en) 2000-11-22
EP0978587B1 (en) 2003-04-23
EP0978587A2 (en) 2000-02-09
US6203665B1 (en) 2001-03-20

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Legal Events

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